The official had announced that FFXIV Patch 4.2 would be released on the end of January, 2018. Before that, the official will update the relating news one by one, and MmoGah (ranking No.1 FFXIV Gil Selling Website on google) will also upload the patch 4.2 news following the official steps. Here is about Changes to Allagan Tomestones in Patch 4.2.